Move NetworkService mojom files to content/public/common.

content/common/url_loader_factory.mojom

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-module content.mojom;
-
-import "mutable_network_traffic_annotation_tag.mojom";
-import "url_loader.mojom";
-
-[Native]
-struct URLSyncLoadResult;
-
-const uint32 kURLLoadOptionNone = 0;
-// Sends the net::SSLInfo struct in OnReceiveResponse.
-const uint32 kURLLoadOptionSendSSLInfo = 1;
-
-interface URLLoaderFactory {
-  // Creats a URLLoader and starts loading with the given |request|. |client|'s
-  // method will be called when certain events related to that loading
-  // (e.g., response arrival) happen. |request_id| is for compatibility with
-  // the existing Chrome IPC.
-  CreateLoaderAndStart(associated URLLoader& loader,
-                       int32 routing_id,
-                       int32 request_id,
-                       uint32 options,
-                       URLRequest request,
-                       URLLoaderClient client,
-                       MutableNetworkTrafficAnnotationTag traffic_annotation);
-
-  // Loads the resource for the given |request| synchronously.
-  // |request_id| is for compatibility with the existing Chrome IPC.
-  [Sync] SyncLoad(int32 routing_id,
-                  int32 request_id,
-                  URLRequest request)
-      => (URLSyncLoadResult result);
-};